Toyota RAV4 1999 Manual page 37

See RETRIEVING CODES under DIAGNOSIS & TESTING. If DTC 51/B0107 is not displayed,
system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING
LIGHT INTERMITTENT . If DTC 51/B0107 is displayed, replace passenger-side air bag module.
DTC 52/B0108: SHORT TO BATTERY IN PASSENGER-SIDE AIR BAG SQUIB CIRCUIT
Description
The passenger-side air bag squib circuit consists of the air bag sensor assembly and passenger-side air bag
module. The squib circuit causes the passenger-side air bag to deploy when deployment conditions are satisfied.
Possible Causes
DTC 52/B0108 could be caused by a short to battery in Yellow/Red (circuit P+) and Yellow/Green (circuit P-)
wires in passenger-side air bag squib circuit, passenger-side air bag squib malfunction or air bag sensor
assembly malfunction.
NOTE: During testing, if DTCs other than DTC 52/B0108 are displayed, disregard them.
Diagnostic Procedure
1. Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG
SYSTEM. Reconnect negative battery cable.
2. Turn ignition switch to ACC or ON position. Measure voltage between ground and Yellow/Red wire
(circuit P+) of air bag sensor assembly side of passenger-side air bag squib harness connector. See
WIRING DIAGRAMS . If voltage is zero volt, go to next step. If voltage is not zero volt, repair or
replace harness or connector between passenger-side air bag module and air bag sensor assembly.
3. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect air bag sensor assembly connector
C20 (center connector) to air bag sensor assembly. Connect jumper wire between Yellow/Red wire
(circuit P+) and Yellow/Green wire (circuit P-) of air bag sensor assembly side of passenger-side air bag
squib harness connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to
ACC or ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES under
DIAGNOSIS & TESTING. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn
ignition switch to ACC or ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING
CODES under DIAGNOSIS & TESTING. If DTC 52/B0108 is not displayed, go to next step. If DTC
52/B0108 is displayed, replace air bag sensor assembly.
4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds.
Reconnect passenger-side air bag module connector. Connect negative battery cable. Wait at least 2
seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear DTCs. See
CLEARING CODES under DIAGNOSIS & TESTING. Turn ignition switch to LOCK position. Wait at
least 20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Retrieve DTCs.
See RETRIEVING CODES under DIAGNOSIS & TESTING. If DTC 52/B0108 is not displayed,
system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING
LIGHT INTERMITTENT . If DTC 52/B0108 is displayed, replace passenger-side air bag module.
DTC 53/B0105: SHORT IN PASSENGER-SIDE AIR BAG SQUIB CIRCUIT
1999 Toyota RAV4
AIR BAG RESTRAINT SYSTEM 1999 Toyota